• Jagdeep Singh
• Amninder Singh

Worldwide researchers are trying to propose various AGC strategies to sustain the system frequency and tie-line power flow at their desired values during normal operation and during small load perturbations as reviewed critically in this paper. The literature survey analysis reveals that various types of control approaches in association with various types of optimization techniques have been suggested by researchers in the recent decades for AGC performance enrichment of power systems. It has been found that a classical controller optimized at a specific operating condition may not perform adequately at altered operating condition. With the classical AGC controller being optimized at definite operating condition, the power system may lead to instability at changed operating condition due to its random and nonlinear behavior. To enhance AGC performance of power system under changed operating conditions, some researchers are working to improve the traditional PI, PID controllers to achieve constant required frequency in least time according to load variations. In this paper, basic building blocks of a two-area hydro-thermal generation unit have been briefed for the understanding of the working of general hydro-thermal energy generation units.

PID controller, Two area hydro-thermal generation units, AGC, Load variations

"A Brief Survey: Automatic Generation Control of Two-Area Hydro-Thermal Electric Power Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.69-74, April-2019, Available :http://www.jetir.org/papers/JETIR1904912.pdf

"A Brief Survey: Automatic Generation Control of Two-Area Hydro-Thermal Electric Power Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp69-74, April-2019, Available at : http://www.jetir.org/papers/JETIR1904912.pdf